Results for "chlorine pool"

Algae Green Pool Medium 2-7 days 272 👍 0

Does Pool Algae Consume Chlorine? Understanding Chlorine Loss

About every time the temperature hits 85°F outside, my pool's chlorine levels nosedive to almost nothing, but stay rock solid during cooler days. I'm adding the same amount of chlorine I normally do, but it seems like it's disappearing quickly. A friend mentioned that algae might actually be 'eating' or consuming the chlorine somehow. Is this actually what's happening? I'm trying to understand the science behind it so I can tackle this problem more effectively. Should I be adding more chlorine, or is there a different approach I should take?…more

Read answer

Salt Water Medium 30 minutes 232 👍 0

Do Salt Water Pools Need Chlorine? Complete Chemistry Guide

This house came with a salt water pool system that the previous owner left in complete disarray, and I'm totally clueless about maintaining it. The pool store told me that salt water pools are "chlorine-free" which is why I made the investment, but now I'm reading conflicting information online.

Do I actually still need to buy and add chlorine to my salt water pool? I thought the salt system was supposed to handle all of that automatically. I'm worried I might be missing something important for keeping the water safe for my kids.…more

Read answer

Water Chemistry Medium 2-6 hours 219 👍 0

Should You Shock Pool When Chlorine Is Already High?

Called my pool guy about my 8-year-old chlorination system that's overdosing — should I shock anyway or risk algae growth? My pool's total chlorine reading is showing high levels, but I'm uncertain whether shocking is still necessary or potentially harmful in this situation.

Specifically, I want to understand the relationship between total chlorine, free chlorine, and combined chlorine levels when determining shock treatment protocols. What's the proper testing sequence and decision matrix for shock treatment when initial chlorine readings appear elevated?…more

Read answer

Editor's Pick

Dolphin Nautilus CC Plus Robotic Pool Vacuum (2026)

Wall-climbing scrubber brush and Wi-Fi control — ideal for in-ground pools up to 40 ft. View on Amazon →

Sponsored

Salt Water Easy 5 minutes 282 👍 0

Do Salt Water Pools Have Chlorine? Yes - Here's Why

Already asked my neighbor about her "chlorine-free" saltwater pool, but mine definitely has chlorine — what am I missing here? I have a 20,000 gallon inground pool and I'm considering converting to a salt water system because I thought it meant no more dealing with chlorine chemicals. My neighbor has been telling me that salt water pools are "chlorine-free" and that's why they're gentler on skin and eyes.

But when I was talking to a pool supply store, the guy mentioned something about salt water pools still having chlorine, just generated differently? I'm confused because if there's still chlorine involved, what's the actual difference? I've been manually adding liquid chlorine to my pool for years and my levels typically run around 2-3 ppm, but I'm tired of the constant chemical additions and storage issues.

Can someone explain whether salt water pools actually contain chlorine or not? And if they do, how does that work with the salt system?…more

Read answer

Salt Water Medium 45 minutes 259 👍 0

Do Saltwater Pools Need Chlorine? The Complete Truth

About two weeks into this rental with my first saltwater pool and the generator's been running constantly but the water stays green no matter what I do. I've thrown every chemical I can think of at this thing - algaecide, shock, clarifier - and nothing's working.

Do saltwater pools actually need regular chlorine added, or am I missing something else? I thought the whole point was that the salt system makes its own chlorine automatically. My levels seem off but I'm not sure if I should be manually adding chlorine to a saltwater pool or if that defeats the purpose entirely.…more

Read answer

Water Chemistry Easy 5 minutes 225 👍 0

How Is Pool Chlorine Made? Complete Manufacturing Guide

Always assumed pool chlorine was just bleach in a fancy package until my chemistry teacher neighbor said it's actually manufactured completely differently. Now I'm curious — what exactly goes into making pool chlorine and is there really a difference between the cheap and expensive stuff?…more

Read answer

Above Ground Easy 30 minutes 243 👍 0

Do You Need Chlorine for Above Ground Pool? Complete Guide

Three weeks into researching my new above ground pool and I'm still torn between using traditional chlorine or going completely chlorine-free. I've seen some alternative sanitization systems advertised, and I'm wondering if chlorine is truly required or if there are viable alternatives that can maintain safe water conditions.

Specifically, I need to know if skipping chlorine altogether would compromise water safety and what the actual consequences would be for swimmer health and water quality. What role does chlorine play in preventing bacterial growth and algae formation in above ground pools compared to in-ground systems?…more

Read answer

Water Chemistry Medium 45 minutes 249 👍 0

Can Pool Chlorine Make You Sick? Health Effects Explained

Opened my pool this season after adjusting pH levels, switching chlorine brands, and getting professional water testing — but my family still gets red eyes and skin irritation after swimming. We've been experiencing eye irritation and some skin redness after swimming, but I'm also worried about not having enough chlorine to kill bacteria and other nasties.

My latest test results show chlorine at around 5-6 ppm, and my CYA is sitting at about 50 ppm. I've been using liquid chlorine and shocking weekly with calcium hypochlorite. Sometimes the chlorine drops really low between treatments, maybe down to 0.5-1 ppm, especially after heavy use or rain.

What's the sweet spot for chlorine levels to avoid both chemical irritation and harmful bacteria? I want to keep everyone healthy but not sure if I should be targeting higher or lower numbers based on my current CYA level.…more

Read answer

Water Chemistry Medium 2-4 hours initial treatment 340 👍 1

Can You Shock Pool With Liquid Chlorine? Complete Guide

Replaced my pool's chlorine tablets with liquid this season — planning to shock my 10,000 gallon pool Saturday, what supplies do I need ready? Have liquid chlorine on hand but not sure if it's effective for shocking or if I need granular shock instead.

How much liquid chlorine would I need to properly shock? Want to raise chlorine levels by about 10ppm.…more

Read answer

Water Chemistry Easy 5 minutes 333 👍 0

Does Pool Chlorine Make You Darker? Skin Effects Explained

During my latest pool investigation, I've got my detective gear ready to figure out why my kids keep coming home darker after swim days — is chlorine actually changing their skin color? They're in the pool for hours during summer camp, and I want to make sure the chemicals aren't harming their skin or causing any unwanted changes.

Is chlorine known to darken skin, or could there be another explanation? I'm also concerned about whether the pool chemicals might be making their skin more vulnerable to other effects from being outdoors so much.…more

Read answer

Algae Green Pool Medium 4-6 hours 1,274 👍 16

Can I Shock Pool After Adding Algaecide? Complete Guide

Spent all morning watching my pool turn green with algae patches and now I'm holding bottles of algaecide and shock with no clue which to use first. But I'm not sure about the timing - can I add both in the same day? Should I put the algaecide in first, or does it matter?

Also, if I can use both, how long should I wait between adding them? Don't want to mess up my water chemistry or waste expensive chemicals by doing this wrong!…more

Read answer

Product Ranking 8 compared

Best Variable Speed Pool Pumps

4.5 (12,400 reviews)

Water Chemistry Medium 1–2 hours for testing and shock treatment; ongoing prevention is a daily habit 41 👍 1

What Are Chloramines in a Pool? Causes & Fixes

My backyard pool has developed a really strong chemical smell, my kids come out with red burning eyes every single time they swim, AND a neighbor mentioned my chlorine levels might actually be too low despite the overpowering odor — all at the same time. I test my water regularly and I keep adding chlorine, so I'm confused why it smells so strong and still seems to be underperforming as a sanitizer.

Someone at the pool store told me what I'm smelling isn't really chlorine at all — it's something called chloramines or 'combined chlorine' — and that this actually means my free chlorine is being used up and isn't working properly. That really surprised me because I always assumed the strong smell meant there was too much chlorine in the water.

Can someone explain exactly what chloramines are, where they come from, and what I need to do to get rid of them? I want to understand the chemistry so I'm actually solving the problem and not just dumping in more product that won't help.…more

Read answer

Salt Water Easy 15 minutes 206 👍 0

Do Salt Water Pools Use Chlorine? The Complete Truth

Since getting my salt water pool, I've been too embarrassed to ask this probably obvious question: does it actually use chlorine or not? Some say salt water pools are chlorine-free, others say they still have chlorine. Which is it?

Looking at switching from traditional chlorine but want to understand what I'm actually getting into. Does the salt system eliminate chlorine completely or not?…more

Read answer

Water Chemistry Easy 30 minutes 467 👍 0

How Long After Adding Chlorine Can You Swim? Safe Wait Times

About an hour after that crazy thunderstorm hit, I finally got around to shocking my pool but now I'm completely lost on how long before the kids can jump back in. The pool store told me I need to add chlorine regularly, but they didn't really explain how long I need to wait before it's safe to swim again.

I'm using liquid chlorine for regular maintenance, but I also bought some shock treatment for when the water gets cloudy. Do I need to wait different amounts of time depending on which one I use? I don't want to mess this up and make anyone sick, so any guidance would be really helpful!…more

Read answer

Water Chemistry Medium 45 minutes 411 👍 2

Pool Shock vs Chlorine: Do You Need Both? Complete Guide

Planning my spring pool opening, the same pushy sales pitch starts at the pool store — they insist I need chlorine tablets AND shock treatment AND algaecide. My pool maintenance costs are getting out of control.

Do I really need to buy separate shock products if I'm already using chlorine for regular sanitization? I'm starting to think they're just trying to squeeze more money out of me. Can't I just use one product that does both jobs? I'd rather go the DIY route and simplify my chemical routine if possible.…more

Read answer

Loading more Q&A...

You've seen all 346 Q&A articles!